hofstra university just outside new york city and three weeks from tonight, americans will choose a president and, george, as we have seen in one night, so much can change. >> it happened two weeks ago, mitt romney came in behind with his back to the wall, 70 million americans watching. he rocked it with a big win. tonight the pressure on the president. another loss could cripple his campaign. he knows he has to convince voters he will fight for the job and has concrete plans for a second term. >> mitt romney connecting with voters and tonight the twist, it is a town hall format. >> the questions come from uncommitted voters. the moderator right there, candy crowley of cnn and covered politics since the days of ronald reagan. >> good evening from hofstra university in new york. i'm candy crowley from cnn's state of the union. we are here for the second presidential debate, a town hall sponsored by the commission of debates. the gallup organization selected 82 voters. their questions will drive the night, my goal to give the conversation direction and ensure questions get answered. the questio